(19)

(11)

EP 3 966 308 A1

(12)

(43) Date of publication: 16.03.2022 Bulletin 2022/11 (21) Application number: 20726548.9 (22) Date of filing: 08.05.2020

(51) International Patent Classification (IPC):  C12M 1/107(2006.01) C10L 3/10(2006.01) C12M 1/00(2006.01) F17C 1/16(2006.01) (52) Cooperative Patent Classification (CPC): C12M 21/04; C12M 23/36; C12M 47/18; C10L 3/104; C10L 2290/548; C10L 2290/60; C10L 2290/06; C10L 2290/567; F17C 2201/0119; F17C 2201/032; F17C 2201/052; F17C 2201/0185; F17C 2221/033; F17C 2221/013; Y02E 50/30; F25J 3/061; F25J 3/0635; F25J 3/067; F25J 2210/66; F25J 2205/20; F25J 2215/04; F25J 2270/90; Y02C 20/40 (86) International application number: PCT/IB2020/054392 (87) International publication number: WO 2020/225794 (12.11.2020 Gazette 2020/46)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 09.05.2019 US 201962845689 P (71) Applicant: BENNAMANN SERVICES LTD Cornwall, TR8 4RY (GB)	(72) Inventors: MANN, Christopher Mawgan Cornwall TR8 4ET (GB) HAGUE, Matthew John Ampthill Bedfordshire MK45 2RP (GB) BRADSHAW, Thomas William Wantage, Oxon OX12 0JH (GB) (74) Representative: D Young & Co LLP  120 Holborn London EC1N 2DY London EC1N 2DY (GB)